Respiratory System
The Respiratory System The human body is made up of trillions of cells. ... This is generally is an involuntary process, and it is governed by specialized neurons in the brain stem, consists of bringing air from outside the body to the depths of the lungs using the network of the lower airway system. These numerous branches make up most of the lungs, which are the main organ(s) of the respiratory system. The respiratory system is composed of a series of airways that transports air from outside the body to the alveoli of the lungs, where gas exchange happens. ... As you exhale, your respiratory muscles relax, causing a decrease in the volume of your chest cavity and an increase in the pressure inside the pleural space. ... There are many diseases which can occur in the respiratory system, but one of the most common is lung cancer. ... Well, the respiratory system is an amazing creation that God made just for us. ... If one does further researching into the human body, they will find that every system fits together, and not one organ could survive without the other.